Crate picky_asn1_der

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picky-asn1-der

Portions of project serde_asn1_der are held by Keziah Biermann, 2019 as part of this project.

This crate implements an ASN.1-DER subset for serde.

The following types have built-in support:

bool: The ASN.1-BOOLEAN-type
u8, u16, u32, u64, u128, usize: The ASN.1-INTEGER-type
(): The ASN.1-NULL-type
&[u8], Vec<u8>: The ASN.1-OctetString-type
&str, String: The ASN.1-UTF8String-type

More advanced types are supported through wrappers:

Integer (as big integer)
Bit String
Object Identifier
Utf8 String
Numeric String
Printable String
IA5 String
Generalized Time
UTC Time
Application Tags from 0 to 15
Context Tags from 0 to 15

Everything sequence-like combined out of this types is also supported out of the box.

use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize)] // Now our struct supports all DER-conversion-traits
struct Address {
    street: String,
    house_number: u128,
    postal_code: u128,
    state: String,
    country: String
}

#[derive(Serialize, Deserialize)] // Now our struct supports all DER-conversion-traits too
struct Customer {
    name: String,
    e_mail_address: String,
    postal_address: Address
}

Example

use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize)]
struct TestStruct {
    number: u8,
    #[serde(with = "serde_bytes")]
    vec: Vec<u8>,
    tuple: (usize, ())
}

let plain = TestStruct{ number: 7, vec: b"Testolope".to_vec(), tuple: (4, ()) };
let serialized = picky_asn1_der::to_vec(&plain).unwrap();
let deserialized: TestStruct = picky_asn1_der::from_bytes(&serialized).unwrap();